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Finding the Fourth Proportional to 71,617.93, 107,428.70 and 19,027.33

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Solution

The fourth proportional to 71,617.93, 107,428.70 and 19,027.33 is: 28,541.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,617.93 : 107,428.70 = 19,027.33 : x
  2. Step 2: Convert to fraction form
    71,617.93/107,428.70 = 19,027.33/x
  3. Step 3: Cross multiply
    71,617.93x = 107,428.70 × 19,027.33
  4. Step 4: Simplify right side
    71,617.93x = 2,044,081,326.37
  5. Step 5: Solve for x
    x = 2,044,081,326.37/71,617.93
  6. Step 6: Final answer
    x = 28,541.47

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.